Kotlin

Long before Kotlin, Android development was synonymous with Java. While Java is one of the most widely used languages in the world, the Android ecosystem was constrained. Due to legal disputes and compatibility requirements, Android was stuck using older versions (Java 6 and 7) for a long time. This led to verbose boilerplate code, slow development cycles, and the infamous “billion-dollar mistake” — the NullPointerException.

In 2026, mobile applications are no longer just interfaces for static data. They are increasingly expected to perceive, reason, and react to their environment in real time. Incorporating Artificial Intelligence into your mobile stack is no longer a futuristic luxury—it is a modern necessity. However, developers face a critical architectural decision: Should you run your AI models in the cloud via APIs, or directly on the device?

If you work with external APIs, you know the struggle. You receive a massive JSON payload, and before you can even begin writing business logic, you have to spend 30 minutes manually typing out data classes, structs, or models to parse it correctly. Typing out nested properties in Go, dealing with getters and setters in Java, or writing Pydantic validation schemas in Python is tedious and highly prone to typos.